Raytek Driver

Raytek Driver

The TR-Mark III 250V is a three phase transformer turns ratio meter with a test voltage measurement range of up to 250V.

The TR-Mark III 250V transformer turns ratio meter offers new features and increased accuracy to make it a perfect system. A color LCD with a backlight and a touch screen increases handling and user comfort. Two USB interfaces make it easy to store measurements on external storage devices, to transfer easily to a personal computer, or download nameplate data of the transformer to test.

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  • Extended test voltage measurement range of up to 250V
  • Automatic measurements of voltage, turns ratio, current, and phase displacement
  • Easy one-time hook up to the transformer
  • Automatic test voltage range
  • Displays deviation from a nominal ratio
  • Tap changer interface with graphic results
  • Load on test object <0.05 VA
  • Measures power transformers PTs and CTs
  • Automatic vector group detection
  • Displays % error vs. name plate value
  • Enhanced heavy-duty protection circuitry
  • Emergency stop push button immediately turns off output
  • Internal printer
  • Data storage of over 10,000 measurements
  • Simple-to-operate color LCD touch screen with backlight
  • Two USB interfaces
  • 5-Year standard warranty
RangeAccuracy at 100V or 40VAccuracy at 10VResolution
0.8 … 2,000±0.06% Rdg ±1 LSD±0.15% Rdg ±1 LSD5 Digits
2,001 … 4,000±0.1% Rdg ±1 LSD±0.3% Rdg ±1 LSD5 Digits
4,001 … 13,000 ±0.3% Rdg ±1 LSDnot specified5 Digits
13,001 … 16,000±0.4% Rdg ±1 LSD5 Digits
RangeAccuracy at 250VResolution
0.8 … 5,000±0.06% Rdg ±1 LSD5 Digits
5,001 … 10,000±0.1% Rdg ±1 LSD5 Digits
10,001 … 32,500±0.3% Rdg ±1 LSD5 Digits
32,501 … 40,000±0.4% Rdg ±1 LSD5 Digits
0 … 1A±0.001A0.1mA
Phase AngleAccuracyResolution
±90 Degree ±0.05 Degree 0.01 Degree
Turns Ratio Range 0.8 to 40,000
Temperature Operating: -10ºC to 60° C (14°F to 140°F)
Storage: -20°C to 70°C (-4°F to 158°F)

See Instruction Manual for more Parameters. Specifications subject to improvement at any time.

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  • Size L: 470 mm (18.5″) W: 371 mm (14.6″) H: 190 mm (7.5″)
  • Weight: 10.2 kg (22.4 lbs.)
  • Input Power: 100 to 250 VAC, 50/60 Hz auto ranging. Fuse: 2A
  • Test Voltage: User Selectable: 250, 100, 40, 10, and 1VAC
  • Max. Test Current: 1A
  • 5.7″ Panel Display Color LCD with a backlight and touch screen
  • Front Panel: Sealed, anodized
  • Interface: 2 USB 2.0 (1 host/1 device) and 9 Pin RS-232 serial
  • Memory Storage: Internally stores more than 10,000 test results
  • Temperature: Operating: –10°C to 60°C (14ºF to 140ºF), Storage: –20°C to 70°C (-4ºF to 158ºF)

See Instruction Manual for more Parameters. Specifications are subject to change without notice.

  • 1002A-05015: H and X Lead Set – 5m (16ft.), 4.1cm (1.6 in.) jaw opening
  • 1002A-05023: Red Extension Lead Set (2) – 10m (32 ft.)
  • 1002A-07001: Power Cord – 6.09m (20 ft.)
  • 1011A-05013: Ground Lead – 5m (16ft.)
  • 1003A-37001: A-B USB Cable – 3m (10ft).
  • 2020A-23001: RS-232 Cable – 3m (10ft.)
  • 1004A-27003: External USB Drive
  • 2040A-08003: Touch Screen Stylus
  • 1002X-07001: Spare Fuse Set, Time Delay 2A (Qty. 5)
  • 2040A-03004: Cable Bag with Shoulder Strap
  • 2040X-18002: Paper Refill for Printer – 5 rolls
  • 1003A-02002: Instruction Manual
  • 1004X-10001: Certificate of Accuracy
  • 1003N-31001: External Trigger Switch for Tap Changer Testing — 10m (32 ft.)
  • 1002A-05002: Red Extension Cable – 10m (32 ft.)
  • T-Rex: 3 Phase Test Voltage Option for TR-Mark III and TR-Mark III 250V
  • TR-Mark III R 250V: 19″ 4U Rackmount version
  • 1004N-15002: Annual Warranty Extension

Firmware TR-Mark III (

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